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How to deal with the bubble of rubber soft joint in static pipe

Time: May 28, 2020 󰃯 Reading times: 599 󰃳 Editor in charge: The sea 󰃗 Column: product focus

Introduction: The key reason of rubber soft joint blistering is: during the production process of rubber soft joint, the inner rubber layer cord fabric and rubber are not fused closely enough, resulting in the gap left in the inner rubber layer. After installation, the pressure is applied, and the water flows into the inner layer through the gap, causing the rubber soft joint to bubble and seep. guide

Rubber flexible joint The key reason for blistering is: during the production process of the rubber soft joint, the inner rubber layer cord fabric and rubber are not fused closely enough, resulting in the gap left in the inner rubber layer. After installation, the pressure is applied, and the water flows into the inner layer through the gap, causing the rubber soft joint to bubble and seep. There are many reasons for the blistering of rubber soft joint. Some are the problems of raw materials, and some are the actual operation of workers in the production and processing of spheres. Compared with some problems caused by time pressure, the material of rubber soft joint is rubber, and blistering is also a common phenomenon, and it can be prevented later. After vulcanization of rubber, there are some bubbles on the surface of the sample with different sizes. After cutting, there are a few bubbles in the middle of the sample.
The root cause of bubble on the surface of rubber soft joint
1. The rubber mixing is not symmetrical and the operators are not standard.
2. The storage of rubber film is not standard and the environment is not hygienic. The management method is not standard.
3. The material has moisture (add a little calcium oxide during mixing)
4. The vulcanization is not enough, and it seems that there are bubbles when it is not ripe.
5. It is not vulcanized enough, and it seems that there are bubbles when it is not ripe.
6. There are many impurities in the vulcanizing agent, and the impurities of small molecules are dissolved in advance. The exhaust design of the grinding tool itself in the residual bubble products is unreasonable, and the gas can not be discharged in time when the rubber material is punched!
7. Long melting time. There are many impurities in the vulcanizing agent, and the impurities of small molecules are dissolved in advance, and the bubbles remain in the products
8. The exhaust design of the grinding tool itself is unreasonable, and the gas cannot be discharged in time when the rubber material is punched!
9. The product is too thick, too little rubber, and the heat conduction of rubber is slow. After surface vulcanization, the fluidity of rubber decreases, resulting in material shortage, which will cause bubbles. Exhaust gas was not discharged well during vulcanization.
10. The vulcanization system should be improved due to the formulation problem.
Solution: rubber soft joint in vulcanization pressure and time to improve
1. Increase curing time or speed.
2. Thin pass several times before vulcanization.
3. Exhaust more times during vulcanization.
 Rubber joint_ Shock absorber_ Compensator Shanghai Huanjing Shock Absorber Co., Ltd

Shanghai Huanjing is a pipeline equipment manufacturer integrating R & D, manufacturing, sales and service. Its main products are: limited rubber joint, flexible rubber joint, flexible pipe rubber joint, rubber shock absorber and other pipeline products. The performance is reliable and can be customized according to needs. The products have been in short supply and sold well in domestic and foreign markets.

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